<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>specaddm</title>
    <link rel="stylesheet" type="text/css" href="csound.css" />
    <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
    <link rel="home" href="index.html" title="The Canonical Csound Reference Manual" />
    <link rel="up" href="OpcodesTop.html" title="Orchestra Opcodes and Operators" />
    <link rel="prev" href="spdist.html" title="spdist" />
    <link rel="next" href="specdiff.html" title="specdiff" />
  </head>
  <body>
    <div class="navheader">
      <table width="100%" summary="Navigation header">
        <tr>
          <th colspan="3" align="center">specaddm</th>
        </tr>
        <tr>
          <td width="20%" align="left"><a accesskey="p" href="spdist.html">Prev</a> </td>
          <th width="60%" align="center">Orchestra Opcodes and Operators</th>
          <td width="20%" align="right"> <a accesskey="n" href="specdiff.html">Next</a></td>
        </tr>
      </table>
      <hr />
    </div>
    <div class="refentry">
      <a id="specaddm"></a>
      <div class="titlepage"></div>
      <a id="IndexSpecaddm" class="indexterm"></a>
      <div class="refnamediv">
        <h2>
          <span class="refentrytitle">specaddm</span>
        </h2>
        <p>specaddm — 
      Perform a weighted add of two input spectra.
          </p>
      </div>
      <div class="refsect1">
        <a id="idp150659024"></a>
        <h2>Description</h2>
        <p>
      Perform a weighted add of two input spectra.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp150660256"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">wsig <span class="command"><strong>specaddm</strong></span> wsig1, wsig2 [, imul2]</pre>
      </div>
      <div class="refsect1">
        <a id="idp150662400"></a>
        <h2>Initialization</h2>
        <p>
      <span class="emphasis"><em>imul2</em></span> (optional, default=0) -- if non-zero, scale the <span class="emphasis"><em>wsig2</em></span> magnitudes before adding. The default value is 0.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp150664544"></a>
        <h2>Performance</h2>
        <p>
      <span class="emphasis"><em>wsig1</em></span> -- the first input spectra.
    </p>
        <p>
      <span class="emphasis"><em>wsig2</em></span> -- the second input spectra.
    </p>
        <p>
      Do a weighted add of two input spectra. For each channel of the two input spectra, the two magnitudes are combined and written to the output according to:
      </p>
        <div class="literallayout">
          <p><br />
magout = mag1in + mag2in * imul2</p>
        </div>
        <p>
    </p>
        <p>
      The operation is performed whenever the input <span class="emphasis"><em>wsig1</em></span> is sensed to be new. This unit will (at Initialization) verify the consistency of the two spectra (equal size, equal period, equal mag types).
    </p>
      </div>
      <div class="refsect1">
        <a id="idp150669616"></a>
        <h2>See Also</h2>
        <p>
      <a class="link" href="specdiff.html" title="specdiff"><em class="citetitle">specdiff</em></a>,
      <a class="link" href="specfilt.html" title="specfilt"><em class="citetitle">specfilt</em></a>,
      <a class="link" href="spechist.html" title="spechist"><em class="citetitle">spechist</em></a>,
      <a class="link" href="specscal.html" title="specscal"><em class="citetitle">specscal</em></a>
    </p>
      </div>
    </div>
    <div class="navfooter">
      <hr />
      <table width="100%" summary="Navigation footer">
        <tr>
          <td width="40%" align="left"><a accesskey="p" href="spdist.html">Prev</a> </td>
          <td width="20%" align="center">
            <a accesskey="u" href="OpcodesTop.html">Up</a>
          </td>
          <td width="40%" align="right"> <a accesskey="n" href="specdiff.html">Next</a></td>
        </tr>
        <tr>
          <td width="40%" align="left" valign="top">spdist </td>
          <td width="20%" align="center">
            <a accesskey="h" href="index.html">Home</a>
          </td>
          <td width="40%" align="right" valign="top"> specdiff</td>
        </tr>
      </table>
    </div>
  </body>
</html>
